SEGMENT INFORMATION - Revenue Disaggregated by Service (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Revenue	$ 296,719	$ 351,231	$ 917,243	$ 1,058,315
Operating Segments \| International
Segment Reporting Information [Line Items]
Revenue	31,786	29,274	100,367	88,439
Consumer connection revenue \| Operating Segments \| International
Segment Reporting Information [Line Items]
Revenue	26,024	23,144	82,711	71,260
Membership Subscription Revenue \| Operating Segments \| International
Segment Reporting Information [Line Items]
Revenue	5,562	6,023	16,891	16,834
Advertising and other revenue \| Operating Segments \| International
Segment Reporting Information [Line Items]
Revenue	200	107	765	345
Domestic
Segment Reporting Information [Line Items]
Revenue	264,933	321,957	816,876	969,876
Domestic \| Operating Segments \| Ads and Leads
Segment Reporting Information [Line Items]
Revenue	241,231	291,993	748,128	877,986
Domestic \| Operating Segments \| Services revenue
Segment Reporting Information [Line Items]
Revenue	23,702	29,964	68,748	91,890
Domestic \| Consumer connection revenue \| Operating Segments \| Ads and Leads
Segment Reporting Information [Line Items]
Revenue	151,893	203,579	480,048	625,527
Domestic \| Advertising revenue \| Operating Segments \| Ads and Leads
Segment Reporting Information [Line Items]
Revenue	78,782	75,074	234,228	212,302
Domestic \| Membership subscription revenue \| Operating Segments \| Ads and Leads
Segment Reporting Information [Line Items]
Revenue	10,452	13,167	33,491	39,597
Domestic \| Other revenue \| Operating Segments \| Ads and Leads
Segment Reporting Information [Line Items]
Revenue	$ 104	$ 173	$ 361	$ 560